MIL-DTL-7899D 阀门止回阀飞机燃油系统

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MIL-DTL-7899D

26 November 2014

SUPERSEDING

MIL-V-7899C

30 April 1979

DETAIL SPECIFICATION

VALVES, CHECK, AIRCRAFT FUEL SYSTEM

INCH-POUND

INACTIVE FOR NEW DESIGN

Comments, suggestions, or questions on this document should be addressed to Oklahoma

City Air Logistics Center/ENSDAA, 3001 Staff Drive, Suite 1AB81A, Tinker AFB, OK

73145 or emailed to ocalc.dsp@us.af.mil. Since contact information can change, you may

want to verify the currency of this address information using the ASSIST Online database at

https://assist.dla.mil.

AMSC N/A FSC 4820

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MIL-DTL-7899D

This specification is approved for use by all Departments and Agencies of the Department of

Defense.

1. SCOPE

1.1 Scope. This specification covers low-pressure check valves suitable for use with

hydrocarbon fuels, fuel vapors, and air.

1.2 Classification. The check valves should be of the following classes based on the applicable

temperature ranges of SAE-ARP8615.

Low Temp Fuel High Temp

Class and Ambient Fuel Ambient

A -55°C (-67°F) 57°C (135°F) 71°C (160°F)

B -55°C (-67°F) 94°C (200°F) 177°C (350°F)

C -55°C (-67°F) 150°C (300°F) 315°C (600°F)

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this

specification. This section does not include documents cited in other sections of this specification or

recommended for additional information or as examples. While every effort has been made to

ensure the completeness of these lists, document users are cautioned that they must meet all specified

requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are

listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards and

handbooks form a part of this document to the extent specified herein. Unless otherwise

specified, the issues of these documents are those cited in the solicitation or contract.

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-PRF-680 - Degreasing Solvent

MIL-DTL-5624 - Turbine Fuel, Aviation, Grades JP-4 and JP-5

MIL-PRF-6855 - Rubber, Synthetic, Sheets, Strips, Molded or Extruded

Shapes, General Specification for

MIL-PRF-7024 - Calibrating Fluids, Aircraft Fuel System Components

MIL-S-7742 - Screw Threads, Standard, Optimum Selected Series:

General Specification for

MIL-I-8500 - Interchangeability and Replaceability of Component Parts

for Aerospace Vehicles

MIL-A-8625 - Anodic Coatings for Aluminum and Aluminum Alloys

MIL-DTL-25988 - Rubber, Fluorosilicone Elastomer, Oil and Fuel Resistant,

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MIL-DTL-7899D

Sheets, Strips, Molded Parts, and Extruded Shapes

MIL-DTL-83133 - Turbine Fuel, Aviation, Kerosene Type, JP-8

(NATO F-34), NATO F-35, and JP-8+100 (NATO F-37)

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-130 - Identification Marking of U.S. Military Property

MIL-STD-810 - Environmental Engineering Considerations and Laboratory

Tests

MIL-STD-889 - Dissimilar Metals

MS21344 - Fitting – Installation of Flared Tube, Straight Threaded

Connectors, Design Standard for

MS21430 - Valve, Check, Fuel and Air, Poppet Type, Zero, Leak

MS28882 - Valve, Fuel Check, Low Pressure, Gasket Seal Straight

Thread Connection

MS28884 - Valve, Fuel Check, Low Pressure, Flared Tube Connection

MS29521 - Disk, Valve

DEPARTMENT OF DEFENSE HANDBOOKS

MIL-HDBK-831 - Preparation of Test Reports

(Copies of these documents are available online at http://quicksearch.dla.mil).

2.3 Non-Government publications. The following documents form a part of this document to

the extent specified herein. Unless otherwise specified, the issues of these documents are those

cited in the solicitation or contract.

ASME INTERNATIONAL

ASME-Y14.24 - Types and Applications of Engineering Drawings

ASME-Y14.34 - Associated Lists

ASME-Y14.35M - Revision of Engineering Drawings and Associated

Documents

ASME-Y14.100 - Engineering Drawing Practices

(ASME documents may be obtained online at http://www.asme.org/ or from ASME

International, Three Park Avenue, New York, New York 10016-5990, USA.)

ASTM INTERNATIONAL

ASTM-D471 - Rubber Property – Effects of Liquids

ASTM-D910 - Gasolines, Aviation

ASTM-D1655 - Aviation Turbine Fuels

ASTM-D6227 - Standard Specification for Unleaded Aviation Gasoline

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标签： #阀门 #阀 #燃油系统

摘要：

本文档详细介绍了MIL-DTL-7899D标准，该标准专门规范了用于飞机燃油系统的止回阀的设计、材料、性能及测试要求。作为美国军用规范，MIL-DTL-7899D确保了阀门在极端温度、高压及燃油腐蚀环境下的可靠密封与单向流动控制，防止燃油倒流对发动机和系统造成损害。该标准涵盖阀门结构、耐压等级、泄漏率及耐久性等关键指标，适用于军用及商用飞机的燃油管路维护与替换。了解MIL-DTL-7899D有助于工程师、采购人员及维修团队选型合规部件，提升飞行安全与系统稳定性。

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